Percent Reduction

The number of volunteers at a sporting event decreased from 754 in 2018 to 600 in 2019. Which of the following is closest to the percent change of the number of volunteers?

• 20%

• 30%

• 10%

• 25%

A DVD originally cost $24.99. Its current price is $19.99. What is the percent of change rounded to the nearest percent?

• 20%

• 20.008%

• 25%

• 25.01%

Lacey bought a new purse that originally cost $25 and is on sale for $15. Find the percent of change in the price in the purse.

• Decrease of 40%

• Decrease of 10%

• Decrease of 30%

• Decrease of 20%

Kate had $2,251.35 in her bank account. Currently, she has $1,975.86 in her account. Find the percent of change rounded to the nearest percent.

• 12% decrease

• 12% increase

• 14% increase

• 14% decrease

The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the sale price of the scooter? 

• 35%

• 25%

• 30%

• 20%

Suppose that replacing an old electric water heater with a new, energy-efficient electric water heater will reduce a home's average monthly electric bill by 20%. If the old electric water heater in a home with a current average monthly electric bill of $110 is replaced by a new energy-efficient one, what will be the home's new average monthly electric bill?

• $22.00

• $88.00

• $90.00

• $109.80

Which value should go in the circled space?

• Amount of change

• Original amount

• 100

• Percent (x)

The pencil pictured was reduced to 60% of its original size. What are the new dimensions of the pencil?

• 0.9 units x 4.2 units

• 2.4 units x 11.2 units

• 1 unit x 5 units

• 0.9 units x 7 units

• 1.5 units x 4.2 units

What does it means if the scale factor is less than 100% (less than 1)?

• The resulting figure will reduce.

• The resulting figure will enlarge.

• The resulting figure will stay the same.

• There is not enough information to answer the question.

Using a horizontal scale factor of 80%, calculate the new length of the red side of the figure. Fill in the blank to answer the question: The new side length is _____ units.